Improvement in saw-gumming- and sharpening machine



Y PATEMED JUN 21 1870 To all whom 'it may concern:

EBENEZERYW. rHELPs, 0E ELIZABETH, NEW JERSEY..

Letters PatentNo. 104,639, dated .Tune 21, 187 0.

IMPROVEMENT 'IN SAW-GUMMING AND SHARPENING MACHINE.

The Schedule refen'ed to in these Lettera Patent and making part of the same,

Be it known that I, EBENEZEE W. Pnntrs of i Elizabeth, in the county of Union and StateofNew Jersey, have invented certaiuncw anduseful Improvements in .Saw-Gumming and Sharpening Machines, 4of which the following is a full, clear, and exactl description, reference being had to the accompanying drawing forming-part of this specification, and in whieh- Figure 1 represents aplan of a saw-glimmer and filer or Sharpener, constructed in accordance with my improvement; I y

Figure 2, a side view of the same; and

- l. Figure 3, a front view` thereof.

imilar letters of refercnceiudicate'corresponding parts. 'i

My invention relates t0 machines for gumrning and filing or sharpening saws, also applicable to the sharpening ofthe cutter-teeth in reaping and mowing-machines,by means of a vrevolving emery-wheel, or other like reducing device. It-'will suiiice here, however, .to

4refer to-the machine as used for gumming and sharpening saws.

, The invention "consistsi'n certain peculiarities o f constructionor modeof hanging and operating the femery-wheel, whereby facilities are afforded to it for every movement necessary to grind. the teeth'of the saw or cutter, either' undertheir hooked fronts, or over theiis'oundedbacks, howeverhollow or rounded the curvature of them; also, for changing the,bevel of .the teeth without moving the entire machine'. Said invention is especiallyapplieable to circular -mllsaws,..tl1e grinding of which, without removal from `their spindles, it provides for.`

Referring to the acconlpanyingdrawingk A represents the main frame, which supports the driving-pulley B, and to which the swinging frame C is attached.

. In applying the machine :to the s'a'w,--th main frame A is bolted or .otherwisesecured to its place, and rotary motion communicated to the driving-wheel B either by engine-power or hand. y 4 'Ihe swinging frame C may be counter-balanced at its free end, to facilitate operation of the machine.

D is theemeryLWheel, fast on a cross-shaft, E, at

the outer or free end of the swinging frame, and de.

riving its motion by a'band or rope, F, through a pulley, G, from thedriving-pulley B.

Said wheel may-either be rounded or V-shaped on its edge, according to the description of the lsaw or cutter to be operated on.

H H are handles or levers connected with the I swinging frame O, and by which the latter is manipulated. as reaured.

Iin contact with-the tooth-in The swinging frame C has its side pieces pivoted, as at aa, to its `back piece, to allow of an 11panddown movement of the swinging frame, which pro. vides for the working of the emery-wheel in and out `of' the teeth, and said back piece of the swinging frame, pivoted, as at b, to allow of the-rocking of said frame, which provides for following the curvature or shape of the teeth ou their front and back edges. y

The-block I, to which the swinging frame C is secured by the pivot b, may be stationary ou the main frame, but it is preferredto attach it thereto by a rertical pivot, c. T hisallows of the `swinging frame (l being moved laterally, to change the bevel of the sawteeth, or to allow of the emery-wheel grinding at dii'- ferent bevels.

` Said adjustment, when made, maybe secured by av set-screw, d, or other-suitable means, according to the Y bevel required. A fuller or `more perfect adjustment, however, in this respect, is attained by providingfor the sliding ot' the emery-wheel shaft Ein its bearing, by pivotingV the one handle o1' lever H', as at e, and connecting it with said shaft, so that the latter may be moved by it laterally, in relation to the swinging frame.

To sharpen'a circular mill-saw while ou its arbor,

the machine is set up tothe side 4of the `saw on the log-carriage, andnear the rear edge of the saw, thatV is, where the teeth, or one of them, stands pointing upward, or nearly so. The machine is set so that the emery-Wheel will stand over said tooth, and the frame of the machine being made fast to the carriage, l

thetooth lying in relation to the emcry-wheel, as

specified, is ground, as required, bythe manipulation of the swinging frame, after which the saw is turned round till the next tooth comes in right position, and soon till the several teethl have been sharpened.

To sharpen common millsaws, cross-cut saws, and

mower and rreaper-knives, the same shouldbe laid 'on a suitably-elevated platform, aud'the emery-wheel be made with a V, insteadv of a rounded edge, as neces sary in sharpening large circular-saws. v

A machine constructed to operate as described has numerous advantages. Thus it is adapted to gummingV and sharpening circular mill-saws, without the necessity of the removal of the saw Afrom its arbor, (which` is a saving of time and labor,) which is always required in rchanging .and truing up a circular nillvsaw when it `is rehung on the arbor Furthermore, the emery-wheel is .so perfectly un;

der the control of the operator, that it can be brought any" desired position.

l Not jouly, too, may the saw be sharpened in less time and with less labor than by filing, but theeost of the l emery-wheel, asoompared with tiles, is infinitely less,

I and a superior edge given to the teeth, and with every facility, as regards meeting varied curvatures, shapes, or bevels. Y

Vhat is here claimed, and desired to be secured by Letters Patent, is

1. The shaft; E of the emerywheel D, made capable of longitudinal adjustment, substantially as specified, and whereby provision is made for lateral adjustment of said wheel, relatively to theframe O, which carries it, as and for the purposes described.

2. The frame C, arranged to center, as at d, in combination swing laterally on a with its pivoted atjustment, substantially as specifi Witnesses:

' FRED, HOSMER,

ARTHUR KINNIER.

ed. E. W. PHELPS. 

